Which data path width allows modern memory modules to transmit 8 bytes of data simultaneously?

The correct choice indicates that a data path width of 64 bits allows modern memory modules to transmit 8 bytes of data simultaneously. This is derived from the conversion between bits and bytes, where 1 byte equals 8 bits. Therefore, if a memory module has a width of 64 bits, it can be divided into 8 separate bytes (since 64 bits ÷ 8 bits per byte = 8 bytes).

This capability is essential for modern computing processes, particularly in systems that handle large volumes of data, as it enables faster data access and improved overall system performance. Memory modules with a 64-bit data path are commonly used in conjunction with 64-bit processors, which also have the ability to handle data in chunks of 64 bits, further enhancing efficiency in data processing.

In contrast, the other options represent data path widths that would allow a different number of bytes to be transmitted simultaneously. A 32-bit data path can only transmit 4 bytes at once, a 128-bit path would transmit 16 bytes, and a 16-bit path would be limited to 2 bytes. Thus, the choice of 64-bit is the only correct answer in relation to transmitting 8 bytes of data simultaneously.